JPH09247830A - Leaf spring cable hanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attach and remove a cable easily by including an upward opening guide surface part which is formed by extending the other end of a retaining cylindrical part and curving it to the outside, and an engaging part which is fitted in the vicinity of the upward opening of the retaining cylindrical part. SOLUTION: A cable hunger 1 includes a holding cylindrical part 2 which is in a cylindrical surface shape and has an upward opening 20, and a hooking cylindrical part 3 which is formed by bending it to the outside and has a downward hanging opening 30. In the upper part of the other end of the retaining cylindrical part 2, a cable guide cylindrical surface part 23 which is curved to the outside and has a small radius of curvature is formed to serve as a guide when a cable is fitted into the upward opening 20. A hooking cylindrical part 3 is part 22, a cylindrical surface part 32 which continues to the nearly constituted of a nearly plane part 31 continuous to a continuous part 22, a cylindrical surface part 32 which continues to the nearly plane part 31 and includes the downward hooking opening 30 or its outside, and a wire guide surface 33 which is provided by bending the tip of the cylindrical surface part 32 to the outside.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable hanger for suspending a cable such as an electric wire on a messenger wire stretched on a utility pole or the like.

[0002]

2. Description of the Related Art The work of suspending a cable on a messenger wire is performed by manually attaching a cable hanger by a worker hanging on the messenger wire or by a worker riding on a lift of an automobile equipped with a worker lifting device. ing. Since this cable hanger installation work is dangerous and the work cost is high, remote operation from the ground and automation by a robot are desired.

[0003]

Since the conventional cable hanger is premised on manual attachment with a high degree of freedom, it is difficult to use it as it is for automatic attachment by a robot hand. The purpose of this invention is
A cable hanger can be attached to suspend the cable on the messenger wire with a simple operation, suitable for remote operation from the ground and automatic installation by a robot, and a structure that makes it easy to attach and detach the cable by replacing or adding cables To provide a cable hanger made of leaf spring.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a leaf spring cable hanger for mounting a cable by a robot hand to hang it on a messenger wire is provided with an upward opening for holding the cable. Of the holding tubular portion, a hooking tubular portion formed by extending one end of the holding tubular portion and bending outward and having a downward hooking port for hooking the messenger wire, and extending the other end of the holding tubular portion. And a guide surface portion of the upward opening that is formed by being curved outward, and an engaging portion that is provided in the vicinity of the upward opening of the holding cylinder portion and that engages with the robot hand.

[0005]

The cable hanger of the present invention is
It will be installed in the next operation. The pawl provided on the robot hand is held by the robot hand with the opening of the holding cylinder portion of the cable hanger being widened by engaging with a window provided on the holding cylinder portion, and the cable is inserted and the wire is inserted. Next, when the movable claw is disengaged and the robot hand is displaced downward, the wires are fitted in both of the hooking cylinders, and the cable is hung on the wire.

In this cable hanger, the cable can be hung on the wire by a simple operation, so that automation by a robot is easy. Some cables are frequently attached / detached for increase / decrease or replacement depending on the type. In this cable hanger, the cable can be attached / detached by expanding the guide surface portion, so that it is easy to increase / decrease or replace the cable.

According to the second aspect of the present invention, since the inner diameter of the hooking tubular portion is set to be slightly smaller than the outer diameter of the messenger wire, the holding force of the messenger wire can be increased.

According to a fourth aspect of the present invention, the hooking tubular portion is formed with a notch bent inwardly to form a claw that engages with the twisted wire groove of the messenger wire. . With this configuration, the claw easily engages with the twisted wire groove, so that the swing of the cable can be prevented.

According to a fifth aspect of the present invention, the claw is provided with an inclination corresponding to the twisted wire groove of the messenger wire. With this configuration, the claw easily engages with the twisted wire groove, so that the swing of the cable can be prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a leaf spring cable hanger 1 according to the present invention, which has a holding cylinder portion 2 which is bent in a tubular shape and has an upward opening 20, and one end of which is extended and which is curved outward. And a hooking tubular portion 3 having a hooking port 30 facing downward. Cable hanger 1
Holds the cable K in the holding tube 2 by hooking the hooking tube 3 on the messenger wire W.

The holding tubular portion 2 is set on a tubular surface 21 having a diameter equal to or larger than the diameter of the cable K to be hung at the lower portion, and the radius of curvature is gradually increased at the upper portion of one end and the continuous portion 22 to the hanging tubular portion 3 is provided. Has become. An upper portion of the other end of the holding tubular portion 2 is formed with a cable guide tubular surface portion 23 that is curved outward and has a small radius of curvature, and serves as a guide for fitting the cable K into the upward opening 20. Slopes 24, 24 are formed on both edges of the strip 10 in a direction of expanding the cylindrical surface 21 so that the contact surface with the cable K to be held does not become an edge.

The hooking tubular portion 3 has a substantially flat surface portion 31 which is continuous with the continuous portion 22, a continuous flat surface portion 31, and
Cylindrical surface portion 32 having the downward facing hook 30 on the outside
And a wire guide surface 33 provided by bending the tip of each cylindrical surface portion 32 outward. The window 3 that engages with the claw 45 of the finger 44 provided on the robot hand 43 shown in FIG. 3 is provided at the connection portion to the substantially flat surface portion 31 and the cable guide tubular surface portion 23.
4, 34 are open.

In this embodiment, the cylindrical surface portion 32 is bulged so as to narrow the upward opening 20, and in cooperation with the cable guide cylindrical surface portion 23, the cable K in the holding cylindrical portion 2 is prevented from falling due to shaking. are doing. In addition, the cylindrical surface portion 32
In this case, a claw 35 hooked in the stranded wire groove 11 of the wire W is provided by cutting and raising a U-shaped cut toward the center side. One or more claws 35 are provided and have an inclination according to the inclination of the twisted wire groove 11.

2 to 4 show the work of mounting the cable hanger 1. The robot 4 is hung so that it can travel freely on a messenger wire W stretched between electric poles. Robot 4
Has a body 41, an arm 42, and a robot hand 43, and the robot hand 43 is provided with a pair of fingers 44, 44. Hook-shaped claws 4 on the tips of the fingers 44, 44
5, 45 are provided.

As shown in FIG. 4A, the cable hanger 1 is held by the robot hand 43 and the claw 4 is held.
The windows 34, 34 are engaged with each other at 5, 45, and the fingers 44, 44 are spread to expand and hold the upward opening 20 of the holding cylinder 2.
Next, as shown in FIG. 4B, the arm 42 is moved to insert the cable K into the cable hanger 1 in the robot hand 43 through the upward opening 20, and then the fingers 44 and 44 are narrowed.

Next, as shown in FIG. 4C, when the robot hand 43 is displaced downward and the cable hanger 1 is moved downward, the messenger wire W is pushed into the hooking tubular portion 3 from the downward hooking port 30. The operation shown in (b) of FIG. 4 and the operation shown in (c) of FIG.
The opposite is also possible.

Next, when the robot hand 43 is displaced slightly downward and the fingers 44, 44 are spread, the claws 45, 45 and the window 3 are opened.
The engagement with Nos. 4 and 34 is released. This completes the work of mounting one cable hanger 1.

FIG. 5 shows a second embodiment of the cable hanger 1. In this embodiment, the cylindrical surface 21 is formed with three longitudinally extending inner bulges 25. As a result, the holding cylinder 2
Since the inner bulge 25 can prevent the contact surfaces of the cable K and both sides of the holding tube portion 2 from becoming edges, the inclined surfaces 24, 24 may be omitted.

FIG. 6 shows a third embodiment of the cable hanger 1. In this embodiment, a large number of inwardly projecting embosses 26 are formed on the cylindrical surface 21. As a result, the holding force of the cable K by the holding tubular portion 2 can be increased, and it is possible to prevent the contact surfaces between the cable K and both sides of the holding tubular portion 2 from becoming edges due to a large number of embosses, and thus the inclined surface 2
4, 24 may be omitted.

[Brief description of drawings]

FIG. 1 is a perspective view of a cable hanger according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a robot for mounting a cable hanger.

FIG. 3 is a perspective view of a cable hanger and a robot hand.

FIG. 4 is a diagram showing the work of mounting the cable hanger.

FIG. 5 is a perspective view of a cable hanger according to a second embodiment of the present invention.

FIG. 6 is a perspective view of a cable hanger according to a third embodiment of the present invention.

[Explanation of symbols]

 1 Cable Hanger 2 Holding Cylinder 3 Hooking Cylinder 4 Robot 11 Stranded Wire Groove of Messenger Wire 20 Upward Opening 23 Cable Guide Cylinder Surface (Guide Surface) 24 Sloping Surface 30 Downward Hooking Port 34 Window (Engagement) 43 Robot Hand 44 Finger 45 nail K cable W messenger wire

Claims (5)

[Claims] 1. A leaf spring cable hanger for mounting a cable by a robot hand to hang it on a messenger wire, the holding tube having an upward opening, and a holding cylinder portion for holding the cable. The one end of the tubular portion is extended and bent outward, and the hanging tubular portion has a downward hooking opening for hooking the messenger wire, and the other end of the holding tubular portion is extended and curved outward. A leaf spring cable hanger, comprising: a guide surface portion of the upward opening; and an engaging portion that is provided in the vicinity of the upward opening of the holding cylinder portion and engages with the robot hand. 2. The leaf hanger cable hanger according to claim 1, wherein an inner diameter of the hooking tubular portion is set to be slightly smaller than an outer diameter of the messenger wire. 3. The leaf spring cable hanger according to claim 1, wherein the engaging portion is a punched window provided in the holding cylinder portion. 4. The plate according to claim 1, wherein the hooking tubular portion is formed by bending a notch inward and is formed with a claw that engages with a twisted wire groove of the messenger wire. Spring cable hanger. 5. The leaf spring cable hanger according to claim 4, wherein the claw is provided with an inclination corresponding to a twisted wire groove of the messenger wire.